Win 7 Desktop became bluish (not BSoD) when mouse is released (& possibly Ctrl key pressed)

Quite often after moving the mouse & my right hand let go of the mouse (& possibly I may
have pressed Ctrl key), the Desktop will become bluish as shown in attached.

I'm not exactly sure what I pressed (as I can't consistently reproduce this) that bring up
this disruptive bluish desktop. To recover from it, I just move the mouse & click on the
Desktop & it will recover.

Not sure if it's related but currently when I pressed the fullstop ie the . key which is also
the key/button with > on it), it will often activate a key below it: it's the key between the
right Alt & right Ctrl keys on my Thinkpad X220 keypad) & this will bring up a little menu:refer to attachment 2's screen (in a browser, while typing the . key, it will pop up a menu
with Undo, Redo, ...). Our laptop support guys gave me a USB keyboard to use & it seems
to help so far while reinstalling the entire Windows 7 did not help so we're inclined to
believe it's a keypad hardware issue as the . key was just right above that key (I can take a
photo of that key if needed; I dont know what's that key called).

Let's resolve the disruptive bluish screen first as our IT guys are going to order a spare
keypad for my X220 later.

This very same Logitech Darkfield Anywhere mouse did not trigger this bluish desktop
issue when used on another Windows 7 PC



The blue-ish Desktop you see is the Aero Peek feature in Windows 7. You can trigger Aero Peek by either moving your mouse to the bottom right hand corner of your screen and hovering it over the Show Desktop button or by pressing the Windows + Space keys on your keyboard simultaneously.



The blue-ish Desktop you see is the Aero Peek feature in Windows 7. You can trigger Aero Peek by either moving your mouse to the bottom right hand corner of your screen and hovering it over the Show Desktop button or by pressing the Windows + Space keys on your keyboard simultaneously.









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